Figure 3
From: Wide-angle scanning planar array with quasi-hemispherical-pattern elements
Relations between the number n of the grounded holes on short edge and antenna performances. (a) Reflection coefficient versus number n. The insert figure shows the grounded holes discussed here, which are marked as white circles. The distance between adjacent grounded holes are fixed and positions of the grounded holes are shown in Fig. 2. Normalized radiation patterns in xz plane, yz plane, and xy plane at 5.8 GHz versus number n are shown in (b–d), respectively. With the decreasing of grounded holes, radiation on z-direction decreases. (e) Electric field distribution at 5.8 GHz on the case of n = 1. The equivalent magnetic currents are marked in the figure, which compose a magnetic current loop. In the calculation, the ground is set as infinite.
